Pump.



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.pplieation led ,i'u'y 2319, i913.

To all 'to/7mm z5 may concern Be it known that li, ill/intimi LUrz, e.citizen ot the Unitedr States, residing i Allendale, in the count)7 ofEssex and Stute of New Jersey, have inf'ented u, new and usefulimprovement in lluinps of which the followineis u specification.

lily invention relates to improvements vin sir pumps, in which .e pistonis actuated by its inertie., and more particularly has for its object toprovide pump ot this choreoter for pumping air into the gusolene or oilreservoir or tank oit en automobile, wherein the oir-pressure in thetank is used to force the ,gf-solene to the carburetor or the oil to thebearings'. l attain this object, und others, by the puinp hereinafterdescribed and shown in the drawings annexed hereto, es will more fullyappear in the description and drawings hereto annexed, in which- Figurel is o view in Vvertical section of u pump embodying; the presentinvention; Fie'. 2 is a. top view of the pump, seine ports being" brokenswap; Fig. 3 is a 'view similar to Fig'. l, showing e modified forni ot:i pump; Fig. is s 1View of an automobile provided with the improvedpump.

Similar reference letters refer to siinilur parts throughout thefigures.

A eosin;T inelosing the pump, is provided, shown in this instance, nrscomprising acy'- lindricul woll, It, with end closures, f and A2. Thedrawingr shows the closure, A', as being integral with the cylindricalwoll and the cloiune ft2 as teintT removable therelironi; the closure Aalso having lateral lugs, A3, with pertorutions, and vertical lugs, A5,with holes, A, tlurrein, to receive bolts to secure the casing' in itsupplied pleol und position. There ore vents, c, in the cusine', l und'2, to allow tree passage oil tl uir to und iroin the inside of the.easing. "the cosine ore two oppositelv disposed pump hinweis. have shownthe borrels us being preferably iuteffrsl with the end closures A', A2,respectively; but it is obvious that the borrels con loe inode seperatetroni the closures und .be uillixed thereto. lli the borrels :1re not:nude of press, l prefer to line them with brass, the linings, li',being' lnred outwnrdlj7 et their inner ends to fucilitate the entranceot the pistons in the bun rels when assembling the pump. rlfhere is unnir duct, lending` from the interior of eneh barrel B to the exterior ofthe casing. The ducts, C, have vulve seats et the end next to theborrels on which are normally specification of Letters Patent.

Petentetl Tune il, item5,

Serial No. 781,36?.

seated bell valves, D, by springs, E, abutting,r against the ends of twoscrew-threaded pipe nipples, F, which are threeded into the casing andure in communication with the ducts C. A. pipe, t", connects toge'herthe nipples Connected to one of the nipples F is :i pipe, F2, whichleeds to the pressure tank, lll, shown in Fig. 4E. For regulating thepressure in the cosine', 'there is en oir duct, l, lendingT from one ofthe ducts, C, to the exterior ot' the easing, through an air duct, l.yChere is bell-valve, J, operetively located between the ducts l and l',normally held to its seat by e spring, L, abutting; against screwthreaded pin, M, odjusteblo to very the effective pressure of the springon the bull vulve J, Bv this ormone-- nient, thempressure oit the oir isregulated. When the nir pressure upon the ball vulve d overcomes thepressure olE the spring L on the valve, und forces 'the lutter from itssent, the nir in the duct will escupe through the ducts l und l to theutlnosplficre. ln the pump barrels B ere pistons, comprising leathercups, N, held between hollow steel bushings, G und plungers, l?, thebushings 1 being' secured inst in the end ot the plungers.

Seated in the bushine's are velves, Q, held in their seats by springs,ll, secured. `in the plungrers l), by pins, El, which are let into theplnngrers through holes T, therein, which lutter also serre esoirpussug'es. The outer ends of the holes 'lf ure closed with screwthreaded plugs T. The pistons are nornrellv held :iwuy from the bottomsot the barrels by springs U, shown, in this instance, ns coiled roundthe outside of the barrels und plunfers, one end honrar seated on unextension ot the lutter, hereinafter de scribed, und the other end oncushions, V. preferably rubber wushers pluccd uround the borrels undluid inguinst the inner face ot the closures l'i, ln the form of thepump shown, if. have. provided two borrels, two pistons und twoplungers, the latter beine; integral with euch other; but, of course,the;Y nuev 'oe in separate ports, of two or more pieces and securedtogether. in the torni ol: the plunger-s shown, their muss is extendedluterollv outwardh7 substuntiullv in the toi-1n oli flanges surroundingthe plunoers and borrels, leaving spaces between the walls ot theborrels, plungers un( flanges for e free movement of the plunges intheir barrels. The flanges will trike up against the washers, Y, incaseot violent extremey stroke et the pistons toward the bottom of the '5,05

waking; wir pump.

